Companies covered

The following communications providers are registered with CISAS and are listed in alphabetical order. If your communications provider has told you that they are a member of CISAS but they are not on this list then please contact us

  • 360 Telecoms

  • 4G Mobiles & Data Ltd.

  • 4Net Technologies Ltd

  • 9 Group

  • A1 Comms business connected

  • A1 Comms Ltd

  • Abbeycomp IT Solutions

  • Acorn Broadband

  • ADNOS

  • ADSI Ltd

  • affordablemobiles.co.uk

  • Agile UK

  • AGILIS Mobile

  • AJRB Services

  • Alfs Tech Ltd

  • Alnwick Computerware Ltd

  • Aloha Connect

  • Aloha Telecommunications Ltd

  • Alphatelecom

  • Amatis Networks

  • Amvia

  • Andrews & Arnold Ltd

  • Anvilmobile Limited

  • Arkessa Limited

  • Asada Mobile

  • Aspen Solutions Ltd

  • AT Telecommunications Limited

  • Atom IP Ltd

  • Babble Cloud

  • Barritel Limited

  • Be Communications

  • Beeline Broadband Ltd

  • BEIP Limited

  • Bespoke Telephony Solutions Limited

  • BigBlu Ltd

  • Bink Networks Ltd

  • Black Widow Ltd

  • Blaucomm Ltd

  • Bluebox Broadband

  • Bongo IT

  • Borderlink Broadband Limited

  • Borders Online Ltd

  • Box Broadband Ltd

  • Bright Server Hosting

  • Brighter Bills

  • Brightstar Ltd

  • Briskona Ltd

  • Britannic Technologies

  • Broadgate Voice and Data Limited

  • Broadway Partners Limited

  • Bulldog Broadband

  • Burstfire Networks Ltd

  • BusinessMovers.Tech Limited

  • Buzz Networks Limited

  • Call27 Telecommunications Ltd

  • Camping Connect

  • CATalyst Systems North Wales Ltd

  • Centracom

  • Chaser Communications Ltd

  • Chess Limited

  • Cirrus IT Services (UK) Limited

  • Citrus Telecom

  • Claranet Limited

  • Clarion Communications

  • Clarity Telecom

  • Class Affinity Projects Ltd

  • Clear Picture Services Limited

  • Cloud Central Convergence Limited

  • Cloud IT Ltd

  • Cloud Phone Company

  • Cloudstream Technology Limited

  • Cobweb Solutions

  • Cobweb Solutions Ltd

  • Code Technology Limited

  • Com Systems

  • COM-TEL Telecom Ltd

  • Comms Unite Limited

  • Community Information Technology

  • Commworx Ltd

  • Compatibility Limited

  • Computer Systems UK Ltd

  • Comvista Networks Ltd.

  • Contedia Limited

  • Convergence Group Networks Ltd

  • Corgi Telecom

  • Cornerstone Business Solutions Ltd

  • Corporate ICT

  • Creative Work Studios Limited

  • Creditcall Telecom Services Ltd

  • Crockham Hill CIC

  • Cyberair Ltd

  • Dark Group Ltd

  • Datacentres Ltd

  • Dedi

  • Delight Mobile

  • Dial123 Limited

  • DialGreen

  • Digisolutions Ltd

  • Direct Voice and Data

  • DPS Technology Group

  • Dualtone Communications Ltd

  • Dunedin IT Ltd

  • East Point Business Services Ltd

  • Eat IT Drink IT Ltd

  • Ecotalk

  • Edge Telecom

  • efax

  • EMtel Limited

  • Equiinet

  • Equity Networks Ltd

  • eReceptionist

  • Europasat

  • eVoice

  • Expert Telecom Limited

  • Exponential-E Limited

  • Express Telephony

  • Eze Talk Ltd

  • F One Technologies Ltd

  • Fairfield Telecom

  • Falconnet

  • Farndale Free Range Ltd

  • Fibre for Rural Nottinghamshire (F4RN)

  • File Sanctuary Ltd

  • Firefly Enterprises Ltd

  • First Fibre Ltd

  • Firstcom Europe CXP Ltd

  • Fleur Telecom

  • Flexspace No1 LLP

  • FON

  • Foofirst Limited

  • FOS (Future Office Solutions Ltd)

  • Fractal Telecom Services Limited

  • Free03Numbers

  • Frontier Voice Data Limited

  • Fuse Telecom

  • G3 Comms/Genius Networks

  • Glo Talk

  • Global 4 Communications Limited

  • Global Reach Networks Ltd

  • Globalgig Ltd

  • Go Mobile

  • Gold Connections Ltd

  • Gower Coast IT Solutions LTD

  • GPS Telecom Limited

  • Grain Connect Limited

  • Green

  • Green Duck Ltd

  • Green ISP

  • Grip Communications Limited

  • Guaranteed Telecom

  • Hello IP

  • Helpline Limited

  • HeyBroadband Limited

  • Hive Telecom

  • Hoki Ltd

  • Home Telecom

  • Hosted Lync 2013

  • hotsplots GmbH

  • HP Technology

  • I.T Communications Ltd

  • IceConnect

  • iceDigital

  • ICT Studio Limited

  • Ideal 4 U Business Solutions Ltd

  • iGEM Communications Ltd

  • Immervox Limited

  • Imperial Telecom

  • Inspire Telecom

  • Integrated Business Telecommunications Ltd

  • Integrated Digital Services Ltd

  • Integrated Network Services Ltd

  • Intercity Telecoms

  • Internet Connections Ltd

  • Internet For Business

  • Internet Services (EU)

  • Invoco Telecom

  • IT Clinic London Ltd

  • IT Professional Services Limited

  • iTalk

  • ITG Ltd

  • ITSwisp

  • j2 Global Ireland

  • Jaguar Telecom

  • Javelin Broadband Limited

  • Juice Broadband

  • Just 03 Numbers

  • Just 0800 Numbers

  • Just 0844 Numbers

  • Just 0845 Numbers

  • Just Local Numbers

  • Kalnet4u Ltd

  • Kane Cloud Communications

  • Kingdom Mobile Limited

  • Komputrade Ltd

  • KSM Telecom

  • Kube Networks Ltd

  • Kuiper Technology Limited

  • L A Comms

  • Lake Technologies Ltd

  • Lancashire County Council

  • Landlord Broadband

  • Lanonyx Telecom Ltd

  • Lansalot Ltd

  • Lascom Solutions Ltd

  • LCHost

  • Liberatis ltd

  • Life Mobile

  • Linix Ltd

  • Link IP Networks Limited

  • Lister Communications Ltd

  • LJT Systems Ltd

  • Locall Net Ltd

  • Lonsdale Network Services Ltd

  • Lothian Broadband Networks Limited

  • Lotus Telecom

  • Lycamobile

  • M-Tech Systems Ltd

  • Matrix 4G

  • Merula Ltd

  • Met Plus Telecom

  • Met Technologies Limited

  • Method B Ltd

  • Metranet Communications Ltd

  • Michaelston y Fedw Internet Community Interest Company

  • Microcomms Professional Services

  • Millenium Talk

  • MMS Comms Ltd

  • mobileshop.com

  • Moorsweb

  • Murex Mobile Limited

  • Nasstar

  • National Business Communications Ltd

  • NetConnex Broadband Ltd

  • Netfuse Telecom Limited

  • Netmatters

  • Network Fusion LLP

  • Next IS

  • Nimbus Hosting Ltd

  • Nordtelekom Mobile

  • Northsat Limited

  • NOW TV

  • Onecom

  • Optilibta Ltd

  • Oricom

  • Pace Comms Limited

  • Peak Telecom

  • Perfect Broadband

  • Phase 5 Communications Ltd

  • Phi Network Systems

  • phones.co.uk

  • Pine Telecommunications Ltd

  • Pop Telecom Centre Limited

  • Premier Talk UK Ltd

  • Primary PC Solutions

  • Prime Connect Ltd

  • Probado Ltd

  • PSX Digital Ltd.

  • Pure IT Support Ltd

  • Qubic Group Plc

  • Razorblue Ltd

  • Red Dragon I.T. Ltd

  • Redshelf Ltd

  • Reeves Lund & Co Ltd

  • Restore TV

  • Revolution Mobile

  • Ridge Networks Limited

  • Ringcentral UK Ltd

  • Roebuck Communications

  • Ryedale Communications LLP

  • S W Communications Ltd

  • S.E.Business Systems Ltd

  • Satellite Solutions Worldwide Ltd

  • Save9 Limited

  • SBBS

  • Scot-Tel Gould

  • SCUKCO Ltd

  • Siebert Telecom Solutions

  • Simple Telecoms Ltd

  • Sitech Solutions Limited

  • SiteHQ

  • Sky

  • Skyline Networks and Consultancy Ltd

  • Softlink Computer Systems Ltd.

  • Solar Communications Limited

  • SOLWAY Communications

  • SpecTronics Ltd

  • Speedster-IT Ltd

  • Spire Business Communications Limited

  • Spire communications

  • Sprint Convergence Limited

  • Starlink Internet Services Limited

  • Stix Internet Ltd

  • Storacall Technology Ltd

  • Storm

  • Stratus Technologies

  • Stripe 21 Group Limited

  • Sugun

  • Sunshine Mobile Ltd

  • Supatel Limited

  • Sureline Communications Ltd

  • Surftec Limited

  • Swift Managed Services Ltd

  • Switch & Switchconnect

  • Switchboardfree

  • Synergy UK Ltd

  • Talk Talk Group

  • Talking Technology

  • Tallycost Ltd

  • TallyTalk

  • Tamar Telecommunications

  • Techsapiens Ltd

  • TELA Technology Limited

  • Telecom 9000 Ltd

  • Telecom2 Ltd

  • Telecomms Direct

  • Teledesign Solutions Limited

  • Telesis

  • Terahost Ltd

  • Tetralogic Ltd

  • TFM Networks Limited

  • The Cellphone Store Ltd

  • The Networking People (North West) Ltd

  • TIC (The Independent Choice) Ltd

  • To The Moon Mobile Limited

  • Total Network Solutions (Europe) Ltd

  • Transparent Telecom

  • Trogon Group Ltd

  • TrueSpeed Communications Ltd

  • Truphone Limited

  • TwentyFirstCentury Network Solutions Ltd

  • UK Cloud Communications Limited

  • UK Wholesale Direct Ltd

  • Unchained ISP Limited

  • UnifiedRing Limited

  • Unity Tech Group Ltd t/as Agile & Stratus

  • uno Communications

  • Urbroadband

  • V12 Telecom

  • Vaioni Group Ltd

  • Vaioni Wholesale

  • VDT Direct Ltd

  • Virgin media

  • Virtual Talk Limited

  • Virtually Local Ltd

  • Vision Corporate Services

  • Vision Mobile UK Ltd

  • Vodafone

  • VoIP Yonder

  • VOIspeed Limited

  • Vorboss Ltd

  • Voxcloud

  • VPW Systems (UK) Ltd

  • Watchfront Ltd

  • Wavebet

  • Wavenet Limited

  • Webeye Ltd

  • Welcomm Communications Limited

  • Wessex Telecom

  • White Mobile

  • WideFM LTD

  • Wireless Logic

  • Wispire Ltd.

  • Wizard Apps

  • X-on

  • X-on

  • X2 Communications Ltd

  • Xonadu

  • Yappl Limited

  • Yello Telecommunications Management Ltd

  • Yorkshire Telecommunications Ltd

  • Your Telecoms Expert Ltd

  • YSH

  • Zen Internet Limited

  • Zone Broadband

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